摘要
本文研究了浙江省萧山市山一村农业生态系统中农田、山地和水域３个子系统的氮、磷、钾养分循环。结果表明：该村土壤有机质含量属较高水平，无机氮肥施用量偏大，流失量也较大，磷的总投入量远低于总输出量，钾的输入量也偏低；水体属富营养型，鱼的生长系数仅２．９６。
Nitrogen,phosphorus and potassiun1 nutrientscycles in the subsystems of farmland,hilly area and waterbodyat Shanyi Village of Xiaoshan City in Zhejiang province werestudied. The resuIts indicated that the soil organic matter con-tent in the village was relatively rich; the inorganic nitrogenfertilizer was overused with N loss;the totai input of P fertiliz-er was far lower that of total output,and the K input was alsoIow,The waterbedy has been eutrophicated and fish growthcoefficient was 2.96.
出处
《农村生态环境》
CSCD
1994年第2期57-60,共4页
Rural Eco-Environment
关键词
农业生态系统
养分循环
土壤
水体
氮
磷
钾
agricuItural ecosysterm, nutrient cycle,soil,waterbody,N,P,k,Xiaoshan City of Zhejiang Province
